Improvement in machines for boring blind-stiles



2 Sheets--Sheet1.

J M S E Y M 0 U R Machine for Bo ring Blind Stiles.

Pat ented 0m. 5, new.

Ira/anion- N.FETRS, HOTOJJTHOGRAPHER, WASHINGTON, n c.

- -2'Sheets--Sheet2. M. SEYMOUR.

Machine for Boring Blind Stiles. N 5 53 Palented0ct.5,l875.

F I II 51 W//////////////, 5,

N. PEIERS, PHOTO-UTHOGRAFNER, WASHINGTON. D. C.

UNITED STATES PATENT QFFICE.

JAMES M. SEYMOUR, ()F NEWARK, NEW JERSEY.

IMPROVEMENT IN MACHINES FOR BORING BLIND-STILES.

Specification forming part of Letters Patent No. 168,532, dated October5, 1875; application filed March 2, 1875.

To all whom it may concern:

Be it known that I, JAMES M. SEYMOUR, of the cityof Newark, in thecounty of Essex,

in the State of New Jersey, have made certain Improvements in Machinesfor Boring Blind-Stiles, of which the following is a specification:

, The subject of this invention is to produce a machine for spacing andboring or punching blind-stiles orother articles accurately and withgreat rapidity; and it consists in arranging the operating parts withrelation to each other, as will be hereinafter fully described, and thenspecifically pointed out in the claims.

In the drawings, Figure 1- represents a top or plan view of the machine;Fig. 2, a sectional view of the sliding bit-holder and part of spindle;Fig. 3, an end view of cams that impart motion to sliding bit-holder andpawl; Fig. 4, a sideelevation and view of the actuating parts; Fig. 5, asectional view, showing the same principle applied in a more condensedform; Fig. 6, an end view of Fig. 5.

A is a stand, to which the adjustable bedplate 0 is attached. D is asliding carriage,

which rests on bed-plate O, and which can be moved transversely to andfrom the boringbit 10, to accommodate the different widths of materialto be spaced and bored. E is the spacing-carriage, on which the materialF to be spaced and bored is placed. This carriage E has a longitudinalmotion, and is kept in proper position by the longitudinal dovetails cc. T'T are arms attached to carriage E. m are screws for the purpose ofsecuring the material F to carriage E when being spaced and bored. j isa stop-rack, attached in any convenient way to carriage E, and made ofsuitable material, with notches spaced so as to conform with the spacingrequired in the material F. G is a pawl, pivoted at g to the transversesliding carriage D. g is a pin extending down from and fast in pivot G.t, is a spring, which presses the pawl against the stop-rack j, andwhich engages a notch, cl, as the carriage E is moved toward the pawl G,and thus prevents any further motion of the carriage E until it isreleased by either of the cams a, a, which disengage the pawl from thenotch d by their coming in contact with pin g. a care longitudinaldovetails attached to give the required friction. The cord isthencarried to the opposite pulley f, and from there, through the spacebetween dovetails c c, to the opposite end of carriage E, and therefastened by clamp d, after having first been drawn tight enough, so thatwhen the crankn is put in motion there will be sufficient friction tomove the carriage E. S is a crankshaft, supported by bearings in theprojecting arms 'v n, which are attached to carriage D. h is a concavedfriction drum or pulley fastened t0 shaft S, and which, by means of thefriction-cord .90, gives motion to carriage E. a a are cams attached toshaft S, and are used for disengagingthe pawl G from the notchesin thestop-rack j. a a are cams fastened to shaft S, and are used to impartmotion to thesliding bit-holder H. S is a clutch-shifter, and is anintermediate for transmitting motion from the cams a. a to the slidingbitholder H. The shifter S is made flexible by means of the loose arm Sand the spring to, so as to overcome any irregularity that might ariseeither from. the material F or other causes, it being of the utmostimportance thatthere should be a yielding spot somewhere between the bit10 and where the motion is received. B is an adjustable head for holdingspindle d, and is attached to stand A by means of the screw 1. U is apulley to give motion to spindle d. H is a sliding bit-hold-- er, whichhas a reciprocating as well as a ro-- tary motion, the construction ofwhich will be readily explained by the sectional view, as

seen in Fig. 2. d is a spindle, andn a groove 2 is a collar fitted onthe end of shaft d, and also made to fit the inside out in the same.

of bit-holder H. The bit-holder at z is made to fit spindle d. Y is afeather fitted in the bit-holder H, and, at the same time, made to slidefreely in groove n, which allows the bitholder H to have a reciprocatingmotion while gage for regulating the depth of hole to be bored, and issupported to its position by spring 0', and which also allows the gage eto be carried forward to the material by the bit-7 holder H. The spindled, with the bit 1) attached to it, could be moved forward, instead ofthe sliding bit-holder, and, in that case, a spring, u, wouldbe'necessary to bring it back. Other devices to carry the bit to thework can be used, but the one shown in Fig. 2 I deem among the best.

By making the friction-drum h concave a very desirable and importantresult is obtained, which consists in having an even tension onthe-friction-cord ac, which would not be the case if the drum werestraight on its face, for, after a few revolutions of the drum,

. the cord would become too tight and ride over the coils of cord on thedrum; but by making the drum h concave the cord as can only work a shortdistance from the center of the drum before it receives its propertension, and after that, as the pressure is applied, it will keepgraduallyslipping back toward the center of the drum, therebynecessarily keeping an even tension on the cord as. The stop-rack jhaving been properly. fastened to the spacing-carriage E, and thematerial F also securely held upon spacing-carriage, the operator takeshold of the crank it, and runs the carriage E far enough back, so thatwhen the motion of crank it isreversed, and the carriage E is moved inthe opposite direction, the pawl G will engage one of the notches in thestop-rackj, so the bit 19 will be opposite the place where the hole isrequired to be bored. The crank it is then kept in motion; but, as thespring on pivot g has caused pawl G to engage in notch 01', the carriageE consequently remains stationary, and cord or mustslip on drum it untilcam a has, by means of clutch-shifter S forced the boring-bitp, which isheld and revolved by sliding holder H, into material F. So soon as cam01/ becomes disengaged from clutchshifter S the spring '5, shown in Fig.2, forces the holder and bit 12 back from the material F and to theposition it held previous to being moved by cam a. After cam a hasperformed its duty cam 00 is brought in contact with pin g, which,disengaging pawl G from notch 01, leaves carriage E free, and it isimmediately moved forward by the friction of cord as on drum h untilagain stopped bypawl Gr engaging itself in the next notch.

An end view of cams a a and a. a, showing about the relative positionthey should hold to each other, is seen in Fig. 3. The same principle,applied in a more condensed form, is seen in Figs. 5 and 6, and which isone of several ways to accomplish the same result,

rollers A, F, and F being substituted for the spacing-carriage E, a:performing the same function as carriage D, and the friction-leather m,with the friction-plates y and y, and the springWB. andnutc on shaft or,ta e BBQ B @Q of drum h and cord w. The circular-moving stop S performsthe same duty as stop-rack j stop-catch k and spring k the same work aspawl Gr. Gain m on crank 0 takes the place of cams a a and crank a. Sand S are pressure-springs, taking the place of arms T T. D representsthe material F, and cam m the substitute for cam (1.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The sliding bit-holder H, having a reciprocating as well as arotating motion, in combination with the shifter S and cam a, arrangedto operate substantially as described.

2. The spacing-carriage E, in combination with stop-rack j, pawl G, cama, friction-drum h, and friction-cord 01:, arranged and operatedsubstantially as described.

3. The transverse sliding carriage D, in combination with bed-plate Gand stand A, with the actuating parts thereto attached, substantially inthe manner and for the purpose described.

4. Gage e, in combination with a boringbit, 10, having a reciprocatingmotion, and bit- .holder H, operated substantially as described.

5. In a machine for spacing, boring, or punching, and moving thematerial by means of friction, as herein described, the combination of areciprocating boring-bit or punch,p,- frame G, and stop-rack j, allbeing arranged to operate automatically, in the manner and for thepurpose described.

6. The concave friction-drum h, in combination with friction-cord o0,laterally-adjustable bed D, and spacing-carriage E,.operatedsubstantially as herein described.

7. The yielding clutch-shifter S in combination with the reciprocatingbit-holder H, and cams a or, constructed and operated substantially asand for the purpose herein set forth.

JAS. M. SEYMOUR.

Witnesses:

J. MASON GOSZLER, WALLACE H. PARKER.

